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Updated cgltf.

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Бранимир Караџић
2025-06-07 10:21:48 -07:00
parent 78c61936b0
commit ac59dc5887
2 changed files with 44 additions and 5 deletions
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47
3rdparty/cgltf/cgltf.h vendored
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@@ -2352,11 +2352,46 @@ const cgltf_accessor* cgltf_find_accessor(const cgltf_primitive* prim, cgltf_att
return NULL;
}
static const uint8_t* cgltf_find_sparse_index(const cgltf_accessor* accessor, cgltf_size needle)
{
const cgltf_accessor_sparse* sparse = &accessor->sparse;
const uint8_t* index_data = cgltf_buffer_view_data(sparse->indices_buffer_view);
const uint8_t* value_data = cgltf_buffer_view_data(sparse->values_buffer_view);
if (index_data == NULL || value_data == NULL)
return NULL;
index_data += sparse->indices_byte_offset;
value_data += sparse->values_byte_offset;
cgltf_size index_stride = cgltf_component_size(sparse->indices_component_type);
cgltf_size offset = 0;
cgltf_size length = sparse->count;
while (length)
{
cgltf_size rem = length % 2;
length /= 2;
cgltf_size index = cgltf_component_read_index(index_data + (offset + length) * index_stride, sparse->indices_component_type);
offset += index < needle ? length + rem : 0;
}
if (offset == sparse->count)
return NULL;
cgltf_size index = cgltf_component_read_index(index_data + offset * index_stride, sparse->indices_component_type);
return index == needle ? value_data + offset * accessor->stride : NULL;
}
cgltf_bool cgltf_accessor_read_float(const cgltf_accessor* accessor, cgltf_size index, cgltf_float* out, cgltf_size element_size)
{
if (accessor->is_sparse)
{
return 0;
const uint8_t* element = cgltf_find_sparse_index(accessor, index);
if (element)
return cgltf_element_read_float(element, accessor->type, accessor->component_type, accessor->normalized, out, element_size);
}
if (accessor->buffer_view == NULL)
{
@@ -2500,11 +2535,13 @@ cgltf_bool cgltf_accessor_read_uint(const cgltf_accessor* accessor, cgltf_size i
{
if (accessor->is_sparse)
{
return 0;
const uint8_t* element = cgltf_find_sparse_index(accessor, index);
if (element)
return cgltf_element_read_uint(element, accessor->type, accessor->component_type, out, element_size);
}
if (accessor->buffer_view == NULL)
{
memset(out, 0, element_size * sizeof( cgltf_uint ));
memset(out, 0, element_size * sizeof(cgltf_uint));
return 1;
}
const uint8_t* element = cgltf_buffer_view_data(accessor->buffer_view);
@@ -2520,7 +2557,9 @@ cgltf_size cgltf_accessor_read_index(const cgltf_accessor* accessor, cgltf_size
{
if (accessor->is_sparse)
{
return 0; // This is an error case, but we can't communicate the error with existing interface.
const uint8_t* element = cgltf_find_sparse_index(accessor, index);
if (element)
return cgltf_component_read_index(element, accessor->component_type);
}
if (accessor->buffer_view == NULL)
{

2
3rdparty/cgltf/cgltf_write.h vendored
View File

@@ -815,7 +815,7 @@ static void cgltf_write_material(cgltf_write_context* context, const cgltf_mater
{
cgltf_write_line(context, "\"KHR_materials_anisotropy\": {");
const cgltf_anisotropy* params = &material->anisotropy;
cgltf_write_floatprop(context, "anisotropyFactor", params->anisotropy_strength, 0.f);
cgltf_write_floatprop(context, "anisotropyStrength", params->anisotropy_strength, 0.f);
cgltf_write_floatprop(context, "anisotropyRotation", params->anisotropy_rotation, 0.f);
CGLTF_WRITE_TEXTURE_INFO("anisotropyTexture", params->anisotropy_texture);
cgltf_write_line(context, "}");